Built as a standard 84 seat coach in January 1976 and numbered 21092. Refurbished with an ADA-compliant restroom in March 2003 and renumbered 21792. Trainline-equipped for push-pull operation and converted to a Business Class car with 62 seats in April 2007 and renumbered 81537. Historical information about this car provided by www.amtrakbythenumbers.com.